Last week I posted looking for statistics on the debugging time saved by
providing automatic storage reclamation for the programmer. Kelvin Nilsen
sent me a pretty detailed reference, which I include below. I got a lot of
messages asking me to forward any answer that I got, so here it is.
-Olin

in this report, Rovner estimates that developers using Mesa
spend about 40% of their development time implementing memory
management procedures and debugging errors related to explicit
storage reclamation.

Joel Bartlett (bartlett@src.dec.com) has been cited as reporting that
``a large fraction of software-caused total system failures are caused
by memory managment errors.''